Which of the following reactions involves carbon-carbon bond formation

1.	Which of the following reactions involves carbon-carbon bond formation
Answer» Reimer- Teimann's reaction<BR>Hydroboration-oxidation Cannizzaro's reaction Reactions of primary ALCOHOL with PCC. Solution :Ortho-para directing groups activate the benzene RING TOWARDS electrophilic substitution while meta directinggroups deactivate the benzene NUCLEUS towards electrophilic substitution. `-F, -Cl, -Br` and `-I` (i.e., halogens) are exceptions to the aboverule. These groups are o-, p-directing but deactive the benzene ring

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